Why can't my AC keep up on hot days?
Some nonstop running on the hottest afternoons is normal, since most systems here are sized for about 93 degrees outside. Past that, a dirty outdoor coil, a clogged filter, low refrigerant or a weak capacitor are the usual culprits. If it can't hold 75 on a typical summer day, have a tech check the charge and the temperature drop across the coil.






